18990621

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{29}}^2\times {\mathrm{193}}^1$

素因数の和:270

約数の個数: 36

約数和(自身を含む): 30753268

約数和(自身を除く): 11762647

約数列:

[1, 3, 9, 13, 29, 39, 87, 117, 193, 261, 377, 579, 841, 1131, 1737, 2509, 2523, 3393, 5597, 7527, 7569, 10933, 16791, 22581, 32799, 50373, 72761, 98397, 162313, 218283, 486939, 654849, 1460817, 2110069, 6330207, 18990621]

約数ペア:

[(1, 18990621), (3, 6330207), (9, 2110069), (13, 1460817), (29, 654849), (39, 486939), (87, 218283), (117, 162313), (193, 98397), (261, 72761), (377, 50373), (579, 32799), (841, 22581), (1131, 16791), (1737, 10933), (2509, 7569), (2523, 7527), (3393, 5597)]